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Pneumatic die cushion

  • US 4,732,033 A
  • Filed: 09/26/1986
  • Issued: 03/22/1988
  • Est. Priority Date: 09/26/1986
  • Status: Expired due to Term
First Claim
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1. A pneumatic die cushion for use in a power press comprising, in combination, a pair of substantially parallel spaced plates, a resilient pneumatic bellows mounted between the plates resiliently holding the plates spaced apart, a plurality of limiter pins releasably secured to one of said spaced plates, each of said limiter pins having a threaded end threadedly mounted in one of said plates, each of said limiter pins having turning means on the end having the threaded end adapted for releasably threadedly mounting the limiter pins in the one plate, each of said limiter pins being movable relative to the other of said plates, stop means mounted on the other end of each limiter pin adjacent to the other of said plates limiting movement in one direction the movement of the first mentioned plate relative to the other plate, and a limit sleeve mounted on each of the limiter pins to control the minimum spacing between the plates.

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